Tool is an American rock band from Los Angeles. Formed in 1990, the group's line-up includes vocalist Maynard James Keenan, guitarist Adam Jones and drummer Danny Carey. Justin Chancellor has been the band's bassist since 1995, replacing their original bassist Paul D'Amour. Tool has won four Grammy Awards, performed worldwide tours, and produced albums topping the charts in several countries.

Metallica is an American heavy metal band. The band was formed in 1981 in Los Angeles by vocalist/guitarist James Hetfield and drummer Lars Ulrich and has been based in San Francisco for most of its career. The band's fast tempos, instrumentals and aggressive musicianship made them one of the founding "big four" bands of thrash metal, alongside Megadeth, Anthrax, and Slayer. Metallica's current lineup comprises founding members and primary songwriters Hetfield and Ulrich, longtime lead guitarist Kirk Hammett, and bassist Robert Trujillo. Guitarist Dave Mustaine (who formed Megadeth after being fired from the band) and bassists Ron McGovney, Cliff Burton, and Jason Newsted are former members of the band.

Nirvana was an American rock band formed in Aberdeen, Washington, in 1987. Founded by lead singer and guitarist Kurt Cobain and bassist Krist Novoselic, the band went through a succession of drummers, most notably Chad Channing, and then recruited Dave Grohl in 1990. Nirvana's success popularized alternative rock, and they were often referenced as the figurehead band of Generation X. Their music maintains a popular following and continues to influence modern rock culture.

Green Day is an American rock band formed in the East Bay of California in 1987 by lead vocalist and guitarist Billie Joe Armstrong, together with bassist and backing vocalist Mike Dirnt. For most of the band's career, they have been a power trio with drummer Tré Cool, who replaced John Kiffmeyer in 1990 before the recording of the band's second studio album, Kerplunk (1991). Touring guitarist Jason White became a full-time member in 2012, but returned to his touring role in 2016. Before taking its current name in 1989, Green Day was called Sweet Children, and they were part of the late 1980s/early 1990s Bay Area punk scene that emerged from the 924 Gilman Street club in Berkeley, California. The band's early releases were with the independent record label Lookout! Records. In 1994, their major-label debut Dookie, released through Reprise Records, became a breakout success and eventually shipped over 10 million copies in the U.S. Alongside fellow California punk bands Bad Religion, the Offspring, Rancid, NOFX, Pennywise and Social Distortion, Green Day is credited with popularizing mainstream interest in punk rock in the U.S.

Aerosmith is an American rock band formed in Boston in 1970. The group consists of Steven Tyler (lead vocals), Joe Perry (guitar), Tom Hamilton (bass), Joey Kramer (drums) and Brad Whitford (guitar). Their style, which is rooted in blues-based hard rock, has also incorporated elements of pop rock, heavy metal, glam metal, and rhythm and blues, and has inspired many subsequent rock artists. They are sometimes referred to as "the Bad Boys from Boston" and "America's Greatest Rock and Roll Band". The primary songwriting team of Tyler and Perry is often known as the "Toxic Twins".

Perry and Hamilton, originally in a band together called the Jam Band, met up with Tyler, Kramer, and guitarist Ray Tabano, and formed Aerosmith; in 1971, Tabano was replaced by Whitford. They released a string of multi-platinum albums starting with their eponymous debut in 1973, followed by Get Your Wings in 1974. The band broke into the mainstream with Toys in the Attic (1975) and Rocks (1976). Draw the Line and Night in the Ruts followed in 1977 and 1979. Throughout the 1970s, the band toured extensively and charted a dozen Hot 100 singles, including their first Top 40 hit "Sweet Emotion" and the Top 10 hits "Dream On" and "Walk This Way". By the end of the decade, they were among the most popular hard rock bands in the world and developed a following of fans, often referred to as the "Blue Army". Drug addiction and internal conflict led to the departures of Perry and Whitford in 1979 and 1981. The band did not fare well and the album Rock in a Hard Place (1982) failed to match previous successes.

The Beatles were an English rock band, formed in Liverpool in 1960, that comprised John Lennon, Paul McCartney, George Harrison and Ringo Starr. They are regarded as the most influential band of all time and were integral to the development of 1960s counterculture and popular music's recognition as an art form. Rooted in skiffle, beat and 1950s rock 'n' roll, their sound incorporated elements of classical music and traditional pop in innovative ways; the band also explored music styles ranging from folk and Indian music to psychedelia and hard rock. As pioneers in recording, songwriting and artistic presentation, the Beatles revolutionised many aspects of the music industry and were often publicised as leaders of the era's youth and sociocultural movements.

Black Sabbath were an English rock band formed in Birmingham in 1968 by guitarist Tony Iommi, drummer Bill Ward, bassist Geezer Butler and vocalist Ozzy Osbourne. They are often cited as pioneers of heavy metal music. The band helped define the genre with releases such as Black Sabbath (1970), Paranoid (1970) and Master of Reality (1971). The band had multiple line-up changes following Osbourne's departure in 1979 and Iommi is the only constant member throughout their history.

Disturbed is an American heavy metal band from Chicago, formed in 1994. The band includes vocalist David Draiman, guitarist/keyboardist Dan Donegan, bassist John Moyer, and drummer Mike Wengren. Donegan and Wengren have been involved in the band since its inception, with Moyer replacing former bassist Steve "Fuzz" Kmak and Draiman replacing original lead vocalist Erich Awalt.

Limp Bizkit is an American rap rock band from Jacksonville, Florida. Its lineup consists of lead vocalist Fred Durst, drummer John Otto, guitarist Wes Borland, turntablist DJ Lethal and bassist Sam Rivers. The band's music is marked by Durst's angry vocal delivery and Borland's sonic experimentation. Borland's elaborate visual appearance, which includes face and body paint, masks, and uniforms, also plays a large role in Limp Bizkit's live shows. The band has been nominated for three Grammy Awards, sold 40 million records worldwide, and won several other awards. The band has released 26 singles, the most notable of which include "Nookie", "Re-Arranged", "Break Stuff", "Take a Look Around", "Rollin' (Air Raid Vehicle)", "My Generation", "My Way", "Eat You Alive", and their cover of The Who's 1971 single "Behind Blue Eyes", all of which have charted within the top 20 of the US Alternative Airplay Chart.

Linkin Park is an American rock band from Agoura Hills, California. The band's current lineup comprises vocalist/rhythm guitarist/keyboardist Mike Shinoda, lead guitarist Brad Delson, bassist Dave Farrell, DJ/turntablist Joe Hahn and drummer Rob Bourdon, all of whom are founding members. Vocalists Mark Wakefield and Chester Bennington are former members of the band. Categorized as alternative rock, Linkin Park's earlier music spanned a fusion of heavy metal and hip hop, while their later music features more electronica and pop elements.

Formed in 1996, Linkin Park rose to international fame with their debut studio album, Hybrid Theory (2000), which became certified Diamond by the Recording Industry Association of America (RIAA). Released during the peak of the nu metal scene, the album's singles' heavy airplay on MTV led the singles "One Step Closer", "Crawling" and "In the End" all to chart highly on the US Mainstream Rock chart. The lattermost also crossed over to the nation's Billboard Hot 100. Their second album, Meteora (2003), continued the band's success. The band explored experimental sounds on their third album, Minutes to Midnight (2007). By the end of the decade, Linkin Park was among the most successful and popular rock acts.

The Offspring is an American rock band from Garden Grove, California, formed in 1984. Originally formed under the name Manic Subsidal, the band's current lineup consists of lead vocalist and rhythm guitarist Bryan "Dexter" Holland, lead guitarist Kevin "Noodles" Wasserman and bassist Todd Morse. Over the course of their 39-year career, the Offspring has released ten studio albums and have also experienced a number of lineup changes, most notably with their drummer. Their longest-serving drummer was Ron Welty, who replaced original drummer James Lilja in 1987 and stayed with the Offspring for 16 years. Welty was replaced by Atom Willard in 2003, who was replaced four years later by Pete Parada, who remained as the drummer for the Offspring until he was fired from the band in 2021 for refusing to get vaccinated against COVID-19. Gregory "Greg K." Kriesel (one of the Offspring's co-founders) was their bassist until 2018, when he was fired from the band due to business disputes, thus leaving Holland as the sole remaining original member. Kriesel was replaced by Todd Morse of H2O, who had been the Offspring's touring guitarist since 2009.

Queen are a British rock band formed in London in 1970 by Freddie Mercury (lead vocals, piano), Brian May (guitar, vocals) and Roger Taylor (drums, vocals), later joined by John Deacon (bass). Their earliest works were influenced by progressive rock, hard rock and heavy metal, but the band gradually ventured into more conventional and radio-friendly works by incorporating further styles, such as arena rock and pop rock.

Before forming Queen, May and Taylor had played together in the band Smile. Mercury was a fan of Smile and encouraged them to experiment with more elaborate stage and recording techniques. He joined in 1970 and suggested the name "Queen". Deacon was recruited in February 1971, before the band released their eponymous debut album in 1973. Queen first charted in the UK with their second album, Queen II, in 1974. Sheer Heart Attack later that year and A Night at the Opera in 1975 brought them international success. The latter featured "Bohemian Rhapsody", which stayed at number one in the UK for nine weeks and helped popularise the music video format.

Stone Sour is an American rock band formed in Des Moines, Iowa, in 1992. The band performed for five years before disbanding in 1997. They reunited in 2000 and since 2015, the group has consisted of Corey Taylor, Josh Rand (guitar), Christian Martucci (guitar), Johny Chow (bass) and Roy Mayorga (drums). Longtime members Joel Ekman and Shawn Economaki left the band in 2006 and 2011, respectively. Former lead guitarist Jim Root left in 2014. The band has been on an indefinite hiatus since 2020.

System of a Down is an American heavy metal band formed in Glendale, California, in 1994. Since 1997, the band has consisted of Serj Tankian ; Daron Malakian ; Shavo Odadjian ; and John Dolmayan (drums), who replaced original drummer Andy Khachaturian.

Three Days Grace is a Canadian rock band formed in Norwood, Ontario in 1992 originally as "Groundswell" and played in various local Norwood backyard parties and area establishments before disbanding in 1995 and regrouping in 1997.

Based in Toronto, the band's original line-up consisted of guitarist and lead vocalist Adam Gontier, drummer and backing vocalist Neil Sanderson, and bassist Brad Walst. In 2003, Barry Stock was recruited as the band's lead guitarist, making them a quartet. In 2013, Gontier left the band and was replaced by My Darkest Days' vocalist Matt Walst, the younger brother of Brad Walst.

Currently signed to RCA Records, they have released seven studio albums, six of which at three-year intervals: Three Days Grace in 2003, One-X in 2006, Life Starts Now in 2009, Transit of Venus in 2012, Human in 2015, and Outsider in 2018. Their seventh studio album Explosions was released on May 6, 2022. The first three albums have been RIAA certified 2× platinum, 3× platinum, and platinum, respectively, in the United States. In Canada, they have been certified by Music Canada as platinum, triple platinum, and double platinum, respectively. The band has 17 No. 1 songs on the Billboard Hot Mainstream Rock Tracks chart and 3 No. 1 hits on Alternative Songs.

Staind is an American rock band from Springfield, Massachusetts, formed in 1995. The original lineup consisted of lead vocalist and rhythm guitarist Aaron Lewis, lead guitarist Mike Mushok, bassist and backing vocalist Johnny April, and drummer Jon Wysocki. The lineup has been stable outside of the 2011 departure of Wysocki, who was replaced by Sal Giancarelli. Staind has recorded seven studio albums: Tormented (1996), Dysfunction (1999), Break the Cycle (2001), 14 Shades of Grey (2003), Chapter V (2005), The Illusion of Progress (2008), and Staind (2011). The band was most successful in the early 2000s, with Break the Cycle going five times platinum in the United States and producing a top-five Billboard Hot 100 hit with its lead single "It's Been Awhile". Break the Cycle, along with the band's following two full-length albums, also topped the Billboard 200, and the two after peaked within the top five. Several of their other singles also became rock and pop hits, including "Fade", "For You", "Price to Play", "So Far Away", and "Right Here".

Drowning Pool is an American rock band formed in Dallas, Texas, in 1996. The band was named after the 1975 film The Drowning Pool. Since its formation, the band has consisted of guitarist C.J. Pierce, bassist Stevie Benton, and drummer Mike Luce, as well as a revolving cast of vocalists, the latest being Jasen Moreno.

After the release of their debut album, Sinner (2001), original vocalist Dave Williams was found dead on August 14, 2002 from heart disease. Jason Jones, who replaced Williams in 2003, recorded one album, Desensitized (2004), but left in 2005 due to musical differences. Ryan McCombs of Chicago-based band SOiL, later replaced Jones and released two albums, Full Circle (2007) and Drowning Pool (2010), making it the first time Drowning Pool had not switched singers after just one album. However, McCombs left the band in 2011 to rejoin SOiL. Jasen Moreno was announced as McCombs' replacement in 2012, and the band has since recorded three albums with him: Resilience (2013), Hellelujah (2016) and Strike a Nerve (2022). This makes Moreno the band's first lead singer to perform on three albums.

Mudvayne is an American heavy metal band formed in Peoria, Illinois, in 1996. Known for their sonic experimentation, face and body paint, masks and uniforms, the band has sold over six million records worldwide, including nearly three million in the United States. The group consist of guitarist Greg Tribbett, drummer Matthew McDonough, lead vocalist Chad Gray, and bassist Ryan Martinie. The band became popular in the late-1990s Peoria, Illinois underground music scene, and found success with the single "Dig" from their debut album L.D. 50 (2000). After releasing four more albums and touring relentlessly for nearly a decade, Mudvayne went on hiatus in 2010. They reunited in 2021 and continue to perform live.

Regina Ilyinichna Spektor is a Russian–born American singer, songwriter, and pianist.

Lacuna Coil is an Italian gothic metal band from Milan. Since their formation in 1994, the group has had two name changes, being previously known as Sleep of Right and Ethereal, and they have recorded nine studio albums, two extended plays, two live albums, two compilation albums, one video album, and sixteen singles and music videos.

Inspired by the combination of gothic imagery and music, the members have been known, musically, for composing mid-tempo songs consisting of prominent guitar lines and contrasting dual female/male vocal harmonies to help create a melodic, detached sound. Much of the band's recent material, however, sees a heavier and more down-tuned style, featuring a more distinct bass line and a higher mixing of the guitars within the songs.

Halo is a military science fiction media franchise, originally developed by Bungie and currently managed and developed by 343 Industries, part of Microsoft's Xbox Game Studios. The series launched in 2001 with the first-person shooter video game Halo: Combat Evolved and its tie-in novel, The Fall of Reach. The latest main game, Halo Infinite, was released in 2021.

Halo 2 is a 2004 first-person shooter game developed by Bungie and published by Microsoft Game Studios for the Xbox console. Halo 2 is the second installment in the Halo franchise and the sequel to 2001's critically acclaimed Halo: Combat Evolved. The game features new weapons, enemies, and vehicles, and shipped with online multiplayer via Microsoft's Xbox Live service. In Halo 2's story mode, the player assumes the roles of the human Master Chief and alien Arbiter in a 26th-century conflict between the United Nations Space Command, the genocidal Covenant, and the parasitic Flood.

Left 4 Dead is a 2008 first-person shooter game developed by Valve South and published by Valve. It was originally released for Microsoft Windows and Xbox 360 in November 2008 and for Mac OS X in October 2010, and is the first title in the Left 4 Dead series. Set during the aftermath of a zombie outbreak on the East Coast of the United States, the game pits its four protagonists, dubbed the "Survivors", against hordes of the infected.